|
Summary of Restricted Stock Units Activity (Detail) (Restricted Stock Units (RSUs), USD $)
In Thousands, except Per Share data, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
|
Restricted Stock Units (RSUs)
|
|||
| Number of shares | |||
| Beginning Balance | 1,755 | ||
| Granted | 250 | ||
| Vested | (115) | ||
| Forfeited or expired | (615) | ||
| Ending Balance | 1,275 | 1,755 | |
| Weighted Average Grant Date Fair Value | |||
| Beginning Balance | $ 4.23 | ||
| Granted | $ 1.23 | $ 4.23 | $ 0 |
| Vested | $ 1.10 | ||
| Forfeited or expired | $ 4.23 | ||
| Ending Balance | $ 3.93 | $ 4.23 | |